Lock



`l June 24, 1930. P E CARLSON El' AL l 1,765,824

LOCK

Filed Jx'lne l5, 1928 vent'said lockers frombeing opened except during specified times. v'The'masterc'zontrol lidaterrted*Junev 24,`-'1l930 Y, 'Y i' 'lippii'baiiq 'mea faire 15,

Our iniviention tofiniprovements in ylocks and more7particularl'y to .locks that are operated by electromagnetic meansV from av .distant point'. The improved lock, While intended for general use,ji's especially Well adapted for use inconnection With lockers whereby thecircuits for operating a plu-v rality ofk said locks may be Vconnected in parallel and simultaneously. operated. When the improved lock is used inlconnection vvithA lockers in schools, shopsffor similarplaces these lockers mayalso haveindividual locks f but said lockers will be simultaneously locked and unlockedv atla'given time by .a master controlin an oiiice r`or the like to .pre1V v'may be either ymanuallyoperatedA or operated'by a time clock,A

-Tof`the above end, generallystated, the iny i:'orm of}aSvvheel`V 15 having in its periphery vention consists of thenovel devices" and "combinations of devices hereinafter `idepartly "F2 is a View corresponding rto '1i`ig.v 1

scribed and defined in .the'claims` In the accompanying'drawings, Whichil.v lustrate the inventiomlike characters yindicate like parts throughoutjtheseveral views..

withv the exception that theJ lock Yisl released 451" l 8 rigidly secured to the inner face of the' jparts ,sectioned on V of Fig. 1. f

* The numeral indicates `what maybe as andr :1

Fig. 3 `is ajragmentary-'vietv Swith some sumedv to bea steel lockergand r`thenurneral 5 indicates a-swingablefdoor therefor.- kSaid locker 21, at its door opening7 has an inturned flange that Vaffords a doorl frame 6i and the door 5, at its marginal edge,r has an intumed reinforcing flange- 7, 'A l l The'lock Vmechanism is mounted in a casdoor 5and which *door forms a portionof said casingto completely close the .saine so that the lock mechanism `cannot 'be tampered with. vSaidlockmechanism 'includes l, ahorizontal lock bolt 9 rigidly securedv atits the irregular line 3 3' :'Pnrtiae ngonitnsoivanb catena." ULnIcH, or' ivriivimnronrs, MINNESOTA# n...

" xfj. '1.0i.. i I Y Y y .1928-, Serial mi 285,661

inner end 'to thelovverfendfof a depending arm. 10 pivoted toa bracket v11 in the casing'y 8 Vforl V'vertical swinging-y Vmovementparallel alignedholes 12 and13 in theldo'or ilange 7 and-'doorl frame 6,l respectively,` to lock the,`

' door closed,v as show n inFig.-1.f Adightflat spring '14 isfanchored to the casing 8" and bears'againstv thefarm 10,' VAThis spring' 14=` with' the assistance of gravity normall-yand yieldingly holdsthe 'armilO-.With the lock" boltzj9rretractedgias shotvnin Fig. 2'. The

spring or Jgravity orfby both, asrshowln'.

nately causing thef proj ectin'g` Vandv retractihg pear;` This actuator, as shown,4 is .initlie cioumferentiallyspaced cams 16. Said,`V

spring-j 14 lto. beacfted on lby theV cams 16-'to cause successive.y and alternate projectinga'nd Wh'eelflv has" a shaft17 journaled in the* casingg8'land a bracket 18 secured' to said casing; Arollerequipped stud '19 mountedl onythe armfl() intermediateof itsqendsg'fis .yieldin'gly heldin kContact with theperiphery of 'the VWheel 15 by gravityl and'v the l retraoting movements of the lock,bolt9.,

- Steps.. of. movement are imparted tolti causef, the projecting :.retracting. movements ofthe lock bolt 9 rbyimpulsesy proj.- duced bythe y.electi o`1nagnetic means 'here- Wheel'f V15j to successively and alternately yyieldingiy .ana normally. heid retract-.why l l a light flatTspring-322-A This spring22 is attached tothe armature 21k and engages Wires 24e..

, lug'Q-Sas a basepot resistance on .the casingv fr 8. Fory the purpose offthisfcaseit is not thought necessary tofshow: the circuitioni the `ooilsf20 .with thel exception ofthelead` AS' Pmigy Seited, the maar femme-f ing thev vcircuitv of the electro-magnetic i y 100i lso 'distant point and be manually op-V Kthevcasing and supporting-the lock bolt Yfor'`V erated or automaticallyV controlled by a` master clock.

'Applied tothe armature 21 is ansangle- Qshaped extension 25, theY free or upper end `portion of VWhichextends transversely Vover y the shaft 17 "at oneside` 'of `'the Wheel 175. This armature'extensionl25 carries apivf` i* oted spring-pressed paWl 26 'that cro-operates bolt19depressionsvor`seats 30 fare'vformedi 1I in*V thelcamV 16 in rWhich .theVrtoller*-equippedA l`stud19're'sts.v VThefpurpose of thus releas- Y 'ably holdingthe Wheel 15 is to prevent' theV `sanie-'i'frorn beingaccidentally removed. We claim'is:v A v, classdescribedfagas-J'n ting `af lock bolt VYmounted 2in' thegjfca'sing, fai Wheel havingy circumferentially spaced cams f arranged t'o vc alse alternate lproj ecting fand retractingV kmovements rofjthexlock bolt,`

i 126 With a ratchet Wheel 27 on the AWheel 15 `for imparting stepsof movement VYto'said vvheel underthe action'of the armature 21.V To` prevent more than a 'predetermined move-"` mentor the Wheel `15 by the paWl 26 so( that l Vthe cams 16 are always properly positioned 1in "respect to'theFrollerfequipped'studs 19,4 V ags'top finger 28on`the Varmature*extension Vis 'arrangedto` be successively iprojected A fin' frontwof circumferentially spaoedgstop pins 29 on the -Wheell'duringfthe rotation ofisaid Wheel by a' pawl 26 underftheaction of the. armature 21 as -the same is moved .by the energizedcoils 20'; Y

. .Toreleasably hold the AWheel 15 `:Where t *positioned bythe Ypavvlf26 at the'completion z of the projecting lmovement of Vvthe lock 11n a lock of the ratchet teeth on-thfeWheel; electro-magnetic means Vincludingfa 'pa'wl'l movable thereby* i i and operative'onjtheiratchet teethVV for iml A,parting steps-off :movement cto ,the vvlfiee'ls for, successively positioningthe cams.A

lf2. 1T-he s tru'cture'edeiined;l inV claim 1in" vwhich the -Wheel 'is Vprovidedl with V`circ'ur'n- Y ferentially spaced stop surfaces, and fur-v ther combination Withfaf'stop member Aauto-J Y matically, positioned by the electro-magnetic means for co'operationfjvvithfthestop 'surfaces^to-fliniit the stepsyoffinovement im? l `parted'tothe Wheel. I Y

aj-BQIn alock of the" class described;ir a icas-V t tures.

projecting and retracting movements f ja Wheelhaving circumferentially spaced pe-V Y 'ripheral cams, said' arm having a cam stud intermediate ofits ends, said lock bolt and arm being under strain t0 .move towardthe Wheel and Vyieldingly lhold the cam stud on the periphery of thelvvheelrto'beactedon` by the cams; and cause alternate projecting steps of movement to thewheel orsuccessively positioning the cams.V

. Y In testimony Vwhereof Y PHILIP E. CARLSON;

ing, a'; -lockf'bolt having .an arm`- pivot'ed`V to f f .lthe casingand supporting the lock boltfor .I projecting and "retracting movements;V a

Wheel vhaving cir'ciimferentiallyr spaced cams,A

Y afcamfmember onithe arm,saidlock bolt'. being under strain tomoveinto `Va retracted position and position 'its cani member tobe engaged by the cams and cause alternate projecting and ret'racting movementsof thek lock* bolt, and electro-magnetic `meansV for imparting steps of movementA to the- Wheel for successively positioning fthe cams.' In a lock-or' the class described, a cas-' n'gjjalockbolt having an'arm pivoted to We ailiXiour signa- CARL J.ULRIVGH;

"f V j Y 

